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3b143b55 KA |
1 | /* |
2 | * FB driver for the ILI9163 LCD Controller | |
3 | * | |
4 | * Copyright (C) 2015 Kozhevnikov Anatoly | |
5 | * | |
6 | * Based on ili9325.c by Noralf Tronnes and | |
7 | * .S.U.M.O.T.O.Y. by Max MC Costa (https://github.com/sumotoy/TFT_ILI9163C). | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | */ | |
19 | ||
20 | #include <linux/module.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/gpio.h> | |
24 | #include <linux/delay.h> | |
25 | ||
26 | #include "fbtft.h" | |
27 | ||
28 | #define DRVNAME "fb_ili9163" | |
29 | #define WIDTH 128 | |
30 | #define HEIGHT 128 | |
31 | #define BPP 16 | |
32 | #define FPS 30 | |
33 | ||
34 | #ifdef GAMMA_ADJ | |
35 | #define GAMMA_LEN 15 | |
36 | #define GAMMA_NUM 1 | |
37 | #define DEFAULT_GAMMA "36 29 12 22 1C 15 42 B7 2F 13 12 0A 11 0B 06\n" | |
38 | #endif | |
39 | ||
40 | /* ILI9163C commands */ | |
41 | #define CMD_NOP 0x00 /* Non operation*/ | |
42 | #define CMD_SWRESET 0x01 /* Soft Reset */ | |
43 | #define CMD_SLPIN 0x10 /* Sleep ON */ | |
44 | #define CMD_SLPOUT 0x11 /* Sleep OFF */ | |
45 | #define CMD_PTLON 0x12 /* Partial Mode ON */ | |
46 | #define CMD_NORML 0x13 /* Normal Display ON */ | |
47 | #define CMD_DINVOF 0x20 /* Display Inversion OFF */ | |
48 | #define CMD_DINVON 0x21 /* Display Inversion ON */ | |
49 | #define CMD_GAMMASET 0x26 /* Gamma Set (0x01[1],0x02[2],0x04[3],0x08[4]) */ | |
50 | #define CMD_DISPOFF 0x28 /* Display OFF */ | |
51 | #define CMD_DISPON 0x29 /* Display ON */ | |
52 | #define CMD_IDLEON 0x39 /* Idle Mode ON */ | |
53 | #define CMD_IDLEOF 0x38 /* Idle Mode OFF */ | |
54 | #define CMD_CLMADRS 0x2A /* Column Address Set */ | |
55 | #define CMD_PGEADRS 0x2B /* Page Address Set */ | |
56 | ||
57 | #define CMD_RAMWR 0x2C /* Memory Write */ | |
58 | #define CMD_RAMRD 0x2E /* Memory Read */ | |
59 | #define CMD_CLRSPACE 0x2D /* Color Space : 4K/65K/262K */ | |
60 | #define CMD_PARTAREA 0x30 /* Partial Area */ | |
61 | #define CMD_VSCLLDEF 0x33 /* Vertical Scroll Definition */ | |
62 | #define CMD_TEFXLON 0x34 /* Tearing Effect Line ON */ | |
63 | #define CMD_TEFXLOF 0x35 /* Tearing Effect Line OFF */ | |
64 | #define CMD_MADCTL 0x36 /* Memory Access Control */ | |
65 | ||
66 | #define CMD_PIXFMT 0x3A /* Interface Pixel Format */ | |
67 | #define CMD_FRMCTR1 0xB1 /* Frame Rate Control | |
68 | (In normal mode/Full colors) */ | |
69 | #define CMD_FRMCTR2 0xB2 /* Frame Rate Control (In Idle mode/8-colors) */ | |
70 | #define CMD_FRMCTR3 0xB3 /* Frame Rate Control | |
71 | (In Partial mode/full colors) */ | |
72 | #define CMD_DINVCTR 0xB4 /* Display Inversion Control */ | |
73 | #define CMD_RGBBLK 0xB5 /* RGB Interface Blanking Porch setting */ | |
74 | #define CMD_DFUNCTR 0xB6 /* Display Function set 5 */ | |
75 | #define CMD_SDRVDIR 0xB7 /* Source Driver Direction Control */ | |
76 | #define CMD_GDRVDIR 0xB8 /* Gate Driver Direction Control */ | |
77 | ||
78 | #define CMD_PWCTR1 0xC0 /* Power_Control1 */ | |
79 | #define CMD_PWCTR2 0xC1 /* Power_Control2 */ | |
80 | #define CMD_PWCTR3 0xC2 /* Power_Control3 */ | |
81 | #define CMD_PWCTR4 0xC3 /* Power_Control4 */ | |
82 | #define CMD_PWCTR5 0xC4 /* Power_Control5 */ | |
83 | #define CMD_VCOMCTR1 0xC5 /* VCOM_Control 1 */ | |
84 | #define CMD_VCOMCTR2 0xC6 /* VCOM_Control 2 */ | |
85 | #define CMD_VCOMOFFS 0xC7 /* VCOM Offset Control */ | |
86 | #define CMD_PGAMMAC 0xE0 /* Positive Gamma Correction Setting */ | |
87 | #define CMD_NGAMMAC 0xE1 /* Negative Gamma Correction Setting */ | |
88 | #define CMD_GAMRSEL 0xF2 /* GAM_R_SEL */ | |
89 | ||
90 | /* | |
91 | This display: | |
92 | http://www.ebay.com/itm/Replace-Nokia-5110-LCD-1-44-Red-Serial-128X128-SPI-Color-TFT-LCD-Display-Module-/271422122271 | |
93 | This particular display has a design error! The controller has 3 pins to | |
94 | configure to constrain the memory and resolution to a fixed dimension (in | |
95 | that case 128x128) but they leaved those pins configured for 128x160 so | |
96 | there was several pixel memory addressing problems. | |
97 | I solved by setup several parameters that dinamically fix the resolution as | |
98 | needit so below the parameters for this display. If you have a strain or a | |
99 | correct display (can happen with chinese) you can copy those parameters and | |
100 | create setup for different displays. | |
101 | */ | |
102 | ||
103 | #ifdef RED | |
104 | #define __OFFSET 32 /*see note 2 - this is the red version */ | |
105 | #else | |
106 | #define __OFFSET 0 /*see note 2 - this is the black version */ | |
107 | #endif | |
108 | ||
109 | static int init_display(struct fbtft_par *par) | |
110 | { | |
3b143b55 KA |
111 | par->fbtftops.reset(par); |
112 | ||
113 | if (par->gpio.cs != -1) | |
114 | gpio_set_value(par->gpio.cs, 0); /* Activate chip */ | |
115 | ||
116 | write_reg(par, CMD_SWRESET); /* software reset */ | |
117 | mdelay(500); | |
118 | write_reg(par, CMD_SLPOUT); /* exit sleep */ | |
119 | mdelay(5); | |
120 | write_reg(par, CMD_PIXFMT, 0x05); /* Set Color Format 16bit */ | |
121 | write_reg(par, CMD_GAMMASET, 0x02); /* default gamma curve 3 */ | |
122 | #ifdef GAMMA_ADJ | |
123 | write_reg(par, CMD_GAMRSEL, 0x01); /* Enable Gamma adj */ | |
124 | #endif | |
125 | write_reg(par, CMD_NORML); | |
126 | write_reg(par, CMD_DFUNCTR, 0xff, 0x06); | |
127 | /* Frame Rate Control (In normal mode/Full colors) */ | |
128 | write_reg(par, CMD_FRMCTR1, 0x08, 0x02); | |
129 | write_reg(par, CMD_DINVCTR, 0x07); /* display inversion */ | |
130 | /* Set VRH1[4:0] & VC[2:0] for VCI1 & GVDD */ | |
131 | write_reg(par, CMD_PWCTR1, 0x0A, 0x02); | |
132 | /* Set BT[2:0] for AVDD & VCL & VGH & VGL */ | |
133 | write_reg(par, CMD_PWCTR2, 0x02); | |
134 | /* Set VMH[6:0] & VML[6:0] for VOMH & VCOML */ | |
135 | write_reg(par, CMD_VCOMCTR1, 0x50, 0x63); | |
136 | write_reg(par, CMD_VCOMOFFS, 0); | |
137 | ||
138 | write_reg(par, CMD_CLMADRS, 0, 0, 0, WIDTH); /* Set Column Address */ | |
139 | write_reg(par, CMD_PGEADRS, 0, 0, 0, HEIGHT); /* Set Page Address */ | |
140 | ||
141 | write_reg(par, CMD_DISPON); /* display ON */ | |
142 | write_reg(par, CMD_RAMWR); /* Memory Write */ | |
143 | ||
144 | return 0; | |
145 | } | |
146 | ||
147 | static void set_addr_win(struct fbtft_par *par, int xs, int ys, | |
148 | int xe, int ye) | |
149 | { | |
3b143b55 KA |
150 | switch (par->info->var.rotate) { |
151 | case 0: | |
152 | write_reg(par, CMD_CLMADRS, xs >> 8, xs & 0xff, xe >> 8, | |
153 | xe & 0xff); | |
154 | write_reg(par, CMD_PGEADRS, | |
155 | (ys + __OFFSET) >> 8, (ys + __OFFSET) & 0xff, | |
156 | (ye + __OFFSET) >> 8, (ye + __OFFSET) & 0xff); | |
157 | break; | |
158 | case 90: | |
159 | write_reg(par, CMD_CLMADRS, | |
160 | (xs + __OFFSET) >> 8, (xs + __OFFSET) & 0xff, | |
161 | (xe + __OFFSET) >> 8, (xe + __OFFSET) & 0xff); | |
162 | write_reg(par, CMD_PGEADRS, ys >> 8, ys & 0xff, ye >> 8, | |
163 | ye & 0xff); | |
164 | break; | |
165 | case 180: | |
166 | case 270: | |
167 | write_reg(par, CMD_CLMADRS, xs >> 8, xs & 0xff, xe >> 8, | |
168 | xe & 0xff); | |
169 | write_reg(par, CMD_PGEADRS, ys >> 8, ys & 0xff, ye >> 8, | |
170 | ye & 0xff); | |
171 | break; | |
172 | default: | |
173 | par->info->var.rotate = 0; /* Fix incorrect setting */ | |
174 | } | |
175 | write_reg(par, CMD_RAMWR); /* Write Data to GRAM mode */ | |
176 | } | |
177 | ||
178 | /* | |
179 | 7) MY: 1(bottom to top), 0(top to bottom) Row Address Order | |
180 | 6) MX: 1(R to L), 0(L to R) Column Address Order | |
181 | 5) MV: 1(Exchanged), 0(normal) Row/Column exchange | |
182 | 4) ML: 1(bottom to top), 0(top to bottom) Vertical Refresh Order | |
183 | 3) RGB: 1(BGR), 0(RGB) Color Space | |
184 | 2) MH: 1(R to L), 0(L to R) Horizontal Refresh Order | |
185 | 1) | |
186 | 0) | |
187 | ||
188 | MY, MX, MV, ML,RGB, MH, D1, D0 | |
189 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 //normal | |
190 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 //Y-Mirror | |
191 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 //X-Mirror | |
192 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 //X-Y-Mirror | |
193 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 //X-Y Exchange | |
194 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 //X-Y Exchange, Y-Mirror | |
195 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 //XY exchange | |
196 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | |
197 | */ | |
198 | static int set_var(struct fbtft_par *par) | |
199 | { | |
200 | u8 mactrl_data = 0; /* Avoid compiler warning */ | |
201 | ||
3b143b55 KA |
202 | switch (par->info->var.rotate) { |
203 | case 0: | |
204 | mactrl_data = 0x08; | |
205 | break; | |
206 | case 180: | |
207 | mactrl_data = 0xC8; | |
208 | break; | |
209 | case 270: | |
210 | mactrl_data = 0xA8; | |
211 | break; | |
212 | case 90: | |
213 | mactrl_data = 0x68; | |
214 | break; | |
215 | } | |
216 | ||
217 | /* Colorspcae */ | |
218 | if (par->bgr) | |
219 | mactrl_data |= (1 << 2); | |
220 | write_reg(par, CMD_MADCTL, mactrl_data); | |
221 | write_reg(par, CMD_RAMWR); /* Write Data to GRAM mode */ | |
222 | return 0; | |
223 | } | |
224 | ||
225 | #ifdef GAMMA_ADJ | |
94c0a544 | 226 | #define CURVE(num, idx) curves[num * par->gamma.num_values + idx] |
3b143b55 KA |
227 | static int gamma_adj(struct fbtft_par *par, unsigned long *curves) |
228 | { | |
229 | unsigned long mask[] = { | |
230 | 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, | |
231 | 0x1f, 0x3f, 0x0f, 0x0f, 0x7f, 0x1f, | |
232 | 0x3F, 0x3F, 0x3F, 0x3F, 0x3F}; | |
233 | int i, j; | |
234 | ||
3b143b55 KA |
235 | for (i = 0; i < GAMMA_NUM; i++) |
236 | for (j = 0; j < GAMMA_LEN; j++) | |
94c0a544 | 237 | CURVE(i, j) &= mask[i * par->gamma.num_values + j]; |
3b143b55 KA |
238 | |
239 | write_reg(par, CMD_PGAMMAC, | |
240 | CURVE(0, 0), | |
241 | CURVE(0, 1), | |
242 | CURVE(0, 2), | |
243 | CURVE(0, 3), | |
244 | CURVE(0, 4), | |
245 | CURVE(0, 5), | |
246 | CURVE(0, 6), | |
247 | (CURVE(0, 7) << 4) | CURVE(0, 8), | |
248 | CURVE(0, 9), | |
249 | CURVE(0, 10), | |
250 | CURVE(0, 11), | |
251 | CURVE(0, 12), | |
252 | CURVE(0, 13), | |
253 | CURVE(0, 14), | |
254 | CURVE(0, 15) | |
255 | ); | |
256 | ||
257 | write_reg(par, CMD_RAMWR); /* Write Data to GRAM mode */ | |
258 | ||
259 | return 0; | |
260 | } | |
261 | #undef CURVE | |
262 | #endif | |
263 | ||
264 | static struct fbtft_display display = { | |
265 | .regwidth = 8, | |
266 | .width = WIDTH, | |
267 | .height = HEIGHT, | |
268 | .bpp = BPP, | |
269 | .fps = FPS, | |
270 | #ifdef GAMMA_ADJ | |
271 | .gamma_num = GAMMA_NUM, | |
272 | .gamma_len = GAMMA_LEN, | |
273 | .gamma = DEFAULT_GAMMA, | |
274 | #endif | |
275 | .fbtftops = { | |
276 | .init_display = init_display, | |
277 | .set_addr_win = set_addr_win, | |
278 | .set_var = set_var, | |
279 | #ifdef GAMMA_ADJ | |
280 | .set_gamma = gamma_adj, | |
281 | #endif | |
282 | }, | |
283 | }; | |
284 | ||
285 | FBTFT_REGISTER_DRIVER(DRVNAME, "ilitek,ili9163", &display); | |
286 | ||
287 | MODULE_ALIAS("spi:" DRVNAME); | |
288 | MODULE_ALIAS("platform:" DRVNAME); | |
289 | MODULE_ALIAS("spi:ili9163"); | |
290 | MODULE_ALIAS("platform:ili9163"); | |
291 | ||
292 | MODULE_DESCRIPTION("FB driver for the ILI9163 LCD Controller"); | |
293 | MODULE_AUTHOR("Kozhevnikov Anatoly"); | |
294 | MODULE_LICENSE("GPL"); |